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Atomic Structure of Americium and Tantalum


Atomic Structure of Tantalum and Americium


Atomic Properties

Atomic Number
95   
23
73   
99+

Electron Configuration
[Rn] 5f7 7s2   
[Xe] 4f14 5d3 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
95   
23
73   
99+

Number of Neutrons
148   
12
108   
28

Number of Electrons
95   
23
73   
99+

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
146.00 pm   
35

Covalent Radius
180.00 pm   
21
170.00 pm   
25

Van der Waals Radius
244.00 pm   
10
200.00 pm   
28

Atomic Weight
243.00 amu   
20
180.95 amu   
38

Atomic Volume
17.86 cm3/mol   
29
10.90 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Plutonium
  
Hafnium
  

Next Element
Curium
  
Tungsten
  

Valence Electron Potential
44.00 (-eV)   
40
110.00 (-eV)   
7

Lattice Constant
346.81 pm   
99+
330.13 pm   
99+

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

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